This is a digital data set including hydrographic sounding data collected off the mouth of the Columbia River and the southern Long Beach Washington Peninsula, by the US Army Corps of Engineers, Portland District. The original data set has been evaluated for inaccuracies and/or inconsistencies and cartographic codes have been changed. The data have been reprojected to Washington Stateplane, FIPS 4602, meters. Attributes inlcude easting, northing, depth-navd(m), depth-mllw(m), cartographic code, survey name, and survey year.

Purpose:

This data set is intended for use as an historical bathymetric data set for scientific research. It is not intended for navigational use. The data were originally aquired for bathymetric change analysis as part of the Southwest Washington Coastal Erosion Study (SWCES), a cooperative study by the US Geological Survey and the Washington State Department of Ecology.

Supplemental_Information:

The SWCES was initiated to examine coastal geology, processes, and natural hazards within the Columbia River littoral cell. The study is jointly directed by the U.S. Geological Survey Coastal and Marine Geology Program and the Washington State Department of Ecology Shorelands and Environmental Assistance Program, with active participation of local communities in Pacific and Grays Harbor counties. Related USGS work in the Southwest Washington Coastal Erosion Study can be found online at: <http://www.ecy.wa.gov/programs/sea/swce/>

Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 1998

Currentness_Reference: ground condition

Status:

Progress: Complete

Maintenance_and_Update_Frequency: None planned

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -124.278516

East_Bounding_Coordinate: -123.993978

North_Bounding_Coordinate: 46.489625

South_Bounding_Coordinate: 46.102691

Keywords:

Theme:

Theme_Keyword_Thesaurus: none

Theme_Keyword: Hydrographic data

Theme_Keyword: Bathymetry

Theme_Keyword: Columbia River littoral cell

Theme_Keyword: Southwest Washington Coastal Erosion Study

Theme_Keyword: Bathymetric change

Place:

Place_Keyword_Thesaurus: none

Place_Keyword: Southwest Washington

Place_Keyword: Northern Oregon

Place_Keyword: Pacific Ocean

Place_Keyword: Pacific Northwest

Place_Keyword: Grays Harbor

Place_Keyword: Willapa Bay

Place_Keyword: Columbia River

Place_Keyword: USA

Access_Constraints: None

Use_Constraints:

Although these data have been used by the U.S. Geological Survey, U.S. Department of the Interior, no warranty expressed or implied is made by the U.S. Geological Survey as to the accuracy of the data. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the U.S. Geological Survey in the use of this data, software, or related materials.

This information is not intended for navigational purposes.

Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government.

Please recognize the U.S. Geological Survey (USGS) and the Southwest Washington Coastal Erosion Study (SWWCES) as the source of this information.

Point_of_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Ann E. Gibbs

Contact_Organization: USGS

Contact_Position: Geologist

Contact_Address:

Address_Type: mailing address

Address: 345 Middlefield Road MS999

City: Menlo Park

State_or_Province: CA

Postal_Code: 94025

Country: USA

Contact_Voice_Telephone: 650-329-5060

Contact_Electronic_Mail_Address: agibbs@usgs.gov

Data_Set_Credit:

This project is jointly funded by the Washington State Department of Ecology and the US Geological Survey, Coastal & Marine Geology Program. Data was provided courtesy of H. Rod Moritz of the Portland District, Army Corps of Engineers.

Attribute_Accuracy_Report: The data have been analyzed by the USGS for inaccuracies.

Completeness_Report: The data set is considered complete.

Positional_Accuracy:

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report: unknown

Vertical_Positional_Accuracy:

Vertical_Positional_Accuracy_Report: unknown

Lineage:

Source_Information:

Source_Citation:

Citation_Information:

Originator: US Army Corps of Engineers, Portland District

Publication_Date: Unpublished Material

Title: Columbia River approach and Longbeach extension survey

Other_Citation_Details:

This data set is a compilation of the 1998 approach survey (ap98su.dat) and the northward extension survey (LB_00_fall98 and LB_CL_fall98) offshore the Longbeach Peninsula. Data courtesy H. Rod Moritz, Portland District USACE and the SWCES.

The data set was evaluated for errors and/or inaccuracies and cartographic codes were changed. Soundings on the northernmost line appear about 1m too deep; soundings on line 2nd from the north appear about 2.5m too deep. These two lines were given a cartographic code of 999 and should not be used for analysis.

The data set was formerly known as pcoe98pts

Process_Date: Unknown

Spatial_Data_Organization_Information:

Direct_Spatial_Reference_Method: Vector

Point_and_Vector_Object_Information:

SDTS_Terms_Description:

SDTS_Point_and_Vector_Object_Type: Entity point

Point_and_Vector_Object_Count: 5

SDTS_Terms_Description:

SDTS_Point_and_Vector_Object_Type: Point

Point_and_Vector_Object_Count: 4

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Planar:

Grid_Coordinate_System:

Grid_Coordinate_System_Name: State Plane Coordinate System 1983

State_Plane_Coordinate_System:

SPCS_Zone_Identifier: 4602

Lambert_Conformal_Conic:

Standard_Parallel: 45.833333

Standard_Parallel: 47.333333

Longitude_of_Central_Meridian: -120.500000

Latitude_of_Projection_Origin: 45.333333

False_Easting: 500000.000000

False_Northing: 0.000000

Planar_Coordinate_Information:

Planar_Coordinate_Encoding_Method: coordinate pair

Coordinate_Representation:

Abscissa_Resolution: 0.000064

Ordinate_Resolution: 0.000064

Planar_Distance_Units: meters

Geodetic_Model:

Horizontal_Datum_Name: North American Datum of 1983

Ellipsoid_Name: Geodetic Reference System 80

Semi-major_Axis: 6378137.000000

Denominator_of_Flattening_Ratio: 298.257222

Entity_and_Attribute_Information:

Detailed_Description:

Entity_Type:

Entity_Type_Label: cr98_lbch.pat

Entity_Type_Definition: unknown

Entity_Type_Definition_Source: unknown

Attribute:

Attribute_Label: FID

Attribute_Definition: Internal feature number.

Attribute_Definition_Source: ESRI

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: unknown

Enumerated_Domain_Value_Definition: unknown

Enumerated_Domain_Value_Definition_Source: unknown

Unrepresentable_Domain:

Sequential unique whole numbers that are automatically generated.

Attribute:

Attribute_Label: Shape

Attribute_Definition: Feature geometry.

Attribute_Definition_Source: ESRI

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: unknown

Enumerated_Domain_Value_Definition: unknown

Enumerated_Domain_Value_Definition_Source: unknown

Unrepresentable_Domain: Coordinates defining the features.

Attribute:

Attribute_Label: AREA

Attribute_Definition: Area of feature in internal units squared.

Attribute_Definition_Source: ESRI

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: unknown

Enumerated_Domain_Value_Definition: unknown

Enumerated_Domain_Value_Definition_Source: unknown

Unrepresentable_Domain:

Area is always zero for point coverages. Values are automatically generated.

Attribute:

Attribute_Label: PERIMETER

Attribute_Definition: Perimeter of feature in internal units.

Attribute_Definition_Source: ESRI

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: unknown

Enumerated_Domain_Value_Definition: unknown

Enumerated_Domain_Value_Definition_Source: unknown

Unrepresentable_Domain:

Perimeter is always zero for point coverages. Values are automatically generated.